Home / 305,783.74-421,979.93-167,965.38

Finding the Fourth Proportional to 305,783.74, 421,979.93 and 167,965.38

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Solution

The fourth proportional to 305,783.74, 421,979.93 and 167,965.38 is: 231,791.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,783.74 : 421,979.93 = 167,965.38 : x
  2. Step 2: Convert to fraction form
    305,783.74/421,979.93 = 167,965.38/x
  3. Step 3: Cross multiply
    305,783.74x = 421,979.93 × 167,965.38
  4. Step 4: Simplify right side
    305,783.74x = 70,878,019,084.87
  5. Step 5: Solve for x
    x = 70,878,019,084.87/305,783.74
  6. Step 6: Final answer
    x = 231,791.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.